The Atmel AVR ONE! is shipped with a selftest adapter with an IDC cable. If it is for any reason suspected that the AVR ONE! cable and probe are not functioning correctly, a selftest can be run. The selftest adapter is a loopback adapter that enables the on board MCU to perform diagnostics on the target communication circuitry. This includes the probe, the cable, parts of the main board and implicitly the test adapter itself.


